Power Plant Services (PPS, also known as Alin Machining) is a company that manufactures gas and steam turbine parts. Its products include valves and assemblies, fasteners, outage parts kits, blades, etc. The company also provides field machining and welding, safety measurements, stationary equipment repairs, engineering, and other services. Power Plant Services caters to pulp and paper, geothermal, refineries, chemical, aerospace, and nuclear industries.